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Individual Calculations March 2011 |
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| Gurczak, John Total change: 0.60 | |   |
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| 20th Annual North American Open | Las Vegas, Nevada | USA | 2010-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2174 | 2120 | 3.50 | 7 | 0.39 | 15 | 5.85 | |
|  Ravichandran, Siddharth | m | | 2463 | IND | 0.00 | 1 | -0.12 | 15 | -1.80 | |  Sells, Philip G | | | 1893 | USA | 1.00 | 1 | 0.21 | 15 | 3.15 | | | Van Wely, Loek | g | | 2520 * | NED | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Fajardo Ponce, David | | | 1721 | HON | 1.00 | 1 | 0.08 | 15 | 1.20 | | | Mikhailuk, Slava | f | | 2431 | USA | 0.00 | 1 | -0.14 | 15 | -2.10 | | | Liu, Daniel | | | 1955 | USA | 1.00 | 1 | 0.28 | 15 | 4.20 | | | Omori, Michael | | | 2234 | USA | 0.50 | 1 | 0.16 | 15 | 2.40 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | | | 28th Annual US Amateur Team Championship - West | Woodland Hills, California | USA | 2011-02-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2157 | 2120 | 1.00 | 3 | -0.35 | 15 | -5.25 | |
| | Borgen, Richard L | | | 2123 | USA | 0.00 | 1 | -0.50 | 15 | -7.50 | | | Serpik, Ilia | | | 2195 | USA | 0.50 | 1 | 0.10 | 15 | 1.50 | | | Phillips, Blake J | | | 2153 | USA | 0.50 | 1 | 0.05 | 15 | 0.75 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | |
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